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Virtual mac address of fwsm floating on servers

i have a fwsm and aproblem apper after configuring a new dmz on it, the new severs has a rechability normal form all over the network, however between them not as , its unix based arp -a gives one assignment of fwsm mac address point to ip address of one of new server , after clear arp it get correct and after a while the servers chash the same arp error with anothe ip address.

kindly i need to knoe if it a server problem or what?????

how i can troublshoot to find out the problem??????????????

Thanks

2 REPLIES
Cisco Employee

Re: Virtual mac address of fwsm floating on servers

Yasmena,

You're saying that the FWSM is doing proxy ARPing for hosts on same vlan?

Possibly a misconfig but maybe this will help:

http://www.cisco.com/en/US/docs/security/fwsm/fwsm32/command/reference/s8.html#wp2733129

Marcin

Cisco Employee

Re: Virtual mac address of fwsm floating on servers

To add to Marcin's comment.

The FWSM will proxyarp with its MAC for every ip address that it is translating.

So that could be why you see if show up, because it is arp-replying for all the global ip addresses that he owns.

Check your static and nat statements.

I hope it helps.

PK

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